Answer:
Up on high I wave away but not a word can I say.
What grows in winter, dies in summer, and grows roots upward?
What can be swallowed, but can swallow you?
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
What is the freedom of birds and the pen of old men?
What did the piece of wood say when he saw the screwdriver and screws approaching?